PHOTOELECTRON-SPECTRA OF POLYPYRROLE - THE EFFECT OF THE AMBIENT ATMOSPHERE TO THE SPECTRA

被引:15
作者
HINO, S
IWASAKI, K
TATEMATSU, H
MATSUMOTO, K
机构
[1] Department of Image Science and Technology, Faculty of Engineering, Chiba University, Yayoi-cho, Chiba
[2] Graduate University for Advanced Studies, Okazaki
关键词
Photoelectron spectroscopy;
D O I
10.1246/bcsj.63.2199
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Ultraviolet and X-ray photoelectron spectra of carefully prepared undoped as well as doped polypyrrole have been measured. Reliable UPS of undoped polypyrrole must be the first one in spite of its popularity, because of its instability in the air. Our UPS were compared with those of presumably polymerized pyrrole by X-ray irradiation and other reported results. We examined the validity of these spectra and we found the deformation of the UPS caused by air exposure of the undoped film. A comparison of our UPS with theoretical calculation gave 1.40 Å as an estimated bond distance between α,α' carbon atoms. Both Cls and Nls XPS were asymmetric and consisted of a few peak components, which was not dependent on doping. Their peak envelopes varied with its historical back ground. While the Cls peak envelopes were not deformed so seriously by air exposure, the Nls envelopes were affected by slight air exposure as were observed in the UPS. © 1990 The Chemical Society of Japan.
引用
收藏
页码:2199 / 2205
页数:7
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